1. An overview of the incidences and costs of low back pain;Frymoyer;Orthop Clin North Am,1991
2. The etiology of the failed back surgery syndrome;Burton,1988
3. Fads in the treatment of low back pain;Deyo;N Engl J Med,1991
4. Non-operative treatment of low back disorders: differentiating useful from useless therapy;Deyo,1991
5. Pain and disability: clinical, behavioral, and public policy perspectives;Osterweis,1987